Not entirely, but all countries' copyright laws include a provision allowing certain limited exceptions for education. A good overview of US laws is linked below.
The copyright act of 1987 allowed for educational purposes only
Copyright laws that govern the use of materials for educational purposes allow for limited use of copyrighted materials without permission, such as for teaching, research, and scholarship. This falls under the concept of fair use, which permits the use of copyrighted materials for educational purposes as long as certain criteria are met, such as the purpose of the use, the nature of the copyrighted work, the amount used, and the effect on the market for the original work. It is important for educators to be aware of these laws to ensure compliance and avoid copyright infringement.
If you mean, can you freely PERFORM (including playing a recording of) the Jeopardy song for educational purposes, the answer is most likely yes, under US copyright laws. 17 USC § 110
It depends on the video. Even though there are exemptions in copyright law for educational uses, if the video was not uploaded legally, any use is infringing. If the copyright holder of the video has authorized the upload (or uploaded it himself), displaying it for educational purposes should be fine.
Clip art is not always copyright-free. Some clip art may be used for commercial purposes, but it is important to check the licensing terms for each specific clip art image to ensure that it can be used legally.
It depends on the video. Even though there are exemptions in copyright law for educational uses, if the video was not uploaded legally, any use is infringing. If the copyright holder of the video has authorized the upload (or uploaded it himself), displaying it for educational purposes should be fine.
You should be able to use it in face-to-face teaching without a license.
Although there is no separate "educational copyright" law, there are exceptions and defenses within copyright law to accommodate certain limited unlicensed educational uses. In the US, use of protected materials in educational settings is addressed in Circular 21, linked below.
To copyright your educational materials, you can simply create them and they are automatically protected under copyright law. You can also register your materials with the U.S. Copyright Office for added protection and legal benefits.
Without the many limitations, defenses, and exceptions included in copyright law, it would prevent reasonable educational uses, commentary, and most importantly free speech.
Unfortunately there is no straight answer for a question like this. One would hope the use as described would be considered "fair use," but that can only be decided in court.
No, the covers provided are not copyright free.